I, Den-O, the Contract Urban Legend

Previously, I was bound to a system that called itself the [Kamen Rider System].
[Host, please introduce yourself first. This system will give you the most compatible transformation props based on your personality and thoughts. 】
"I, Inoue Ueya, have a dream, which is to become a king of the utmost kindness and goodness."
[I understand. I will send the Discharge King's pass to the host now.]
???
[Warm reminder, in order to activate the ability of the belt, please find the Demon God and sign a contract. ]
"what?"
……
The boy looked at the high school girl who crawled out of the TV in silence.
"Interesting, do urban legends actually exist in this world?"
Looking at the black pass in his hand, a bold idea emerged in his mind.
"Sadako, right? I need you."
"Eh eh eh eh?"
This is a story about a boy who conquers an urban legend, makes it shy, and signs a contract with it.